/*******************************************************************************
 * Copyright 2017 Bstek
 *
 * Licensed under the Apache License, Version 2.0 (the "License"); you may not
 * use this file except in compliance with the License.  You may obtain a copy
 * of the License at
 *
 *   http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
 * WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.  See the
 * License for the specific language governing permissions and limitations under
 * the License.
 ******************************************************************************/
package com.bstek.urule.runtime.agenda;

import com.bstek.urule.action.ActionValue;
import com.bstek.urule.model.rule.RuleInfo;
import com.bstek.urule.runtime.rete.Context;

import java.util.ArrayList;
import java.util.List;

/**
 * @author Jacky.gao
 * @since 2015年1月2日
 */
public class AgendaGroup extends RuleGroup {
    private boolean focus;
    private boolean executed;

    public AgendaGroup(String name, List<RuleInfo> executedRules) {
        super(name, executedRules);
    }

    @Override
    public List<RuleInfo> execute(Context context, AgendaFilter filter, int max, List<ActionValue> actionValues) {
        executed = true;
        List<RuleInfo> ruleInfos = new ArrayList<RuleInfo>();
        for (int i = 0; i < max; i++) {
            Activation activation = fetchNextExecutableActivation(activations);
            if (activation == null) {
                return ruleInfos;
            }
            activations.remove(activation);
            ActivationImpl ac = (ActivationImpl) activation;
            ac.setProcessed(true);
            boolean autoFocus = false;
            if (activation.getRule().getAutoFocus() != null) {
                autoFocus = activation.getRule().getAutoFocus();
            }
            RuleInfo ruleInfo = null;
            if (focus) {
                ruleInfo = activation.execute(context, executedRules, actionValues);
            } else if (autoFocus) {
                ruleInfo = activation.execute(context, executedRules, actionValues);
            }
            if (ruleInfo != null) {
                ruleInfos.add(ruleInfo);
            }
            if (ruleInfos.size() >= max) {
                break;
            }
        }
        return ruleInfos;
    }

    public boolean isExecuted() {
        return executed;
    }

    public boolean isFocus() {
        return focus;
    }

    public void setFocus(boolean focus) {
        this.focus = focus;
    }
}
